<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        .p1 {
            /* font-style: normal;font-weight: 400;font-size: 20px;font-family: "宋体" */
            font: normal 400 20px "宋体";
        }

        .p2 {
            /* font-weight: 900;font-size: 30px;font-family: "微软雅黑" */
            font: 900 30px "微软雅黑";
        }
    </style>
</head>
<body>
    <p class="p1">我是p1</p>
    <p class="p2">我是p2</p>
</body>
</html>